This vessel was constructed from a unique technology, with an origin potentially dating back as far as 8000 BC. It was capable of high velocities, as it was driven by an ion propulsion drive. The vessel also possessed transporter capabilities, and could be operated by a crew of one.

In 2268, the USS Enterprise encountered an unidentified Eymorg starship outside of the Sigma Draconis system. The ship, according to Mr. Scott, was unlike anything he had seen, stating that its owners "could teach us a thing or two." The vessel, piloted by Kara, leader of the Eymorgs, was sent to the Enterprise to retrieve a brain to serve their new Controller.

For the 2007 remastered version of "Spock's Brain", a new computer-generated version of the ion-powered spacecraft was rendered by CBS Digital. The new ship featured a completely overhauled designed which abandoned the now antiquated notion of a rocket-shaped vessel.

The CBS description of the model stated:

"In the episode "Spock's Brain" the ion propulsion spacecraft spotted by the Enterprise in 2268 certainly impressed Scotty with its design and technology. The comparison between the original and the remastered version provides two totally different looks, with styles defined more by the contemporary technology. The original is a standard rocket-shaped configuration. At the time, "spaceships" tended to fall into a one of two classic looks, the other being the the flying saucer.The new, remastered version of the ion propulsion craft is smaller and more utilitarian, reflecting its single-person occupancy, and it ditches the unnecessary missile/rocket configuration. The design also reflects more modern-day ion propulsion prototypes." [1]